I need to perform a session.load() on an object that I don't know the class of. I call:
Code:
session.load(theObject.getClass(), theObject.getKey())
and I get the traceback (at the end of message).
The problem seems to be that I have a proxy object. When I call getClass() I get the class of the proxy, and there is no persister for the proxy class (only for the actual class).
I have built a work-around. My persistent objects all have a getRealClass() method that returns the class of the actual object. Is there a better way? (Do proxy objects implement an interface that I could check instanceof for and then get the superclass?)
Possible enhancements to hibernate would be to have a method
Code:
session.load(Object, Serializeable)
that would reload the object (hibernate would figure out the appropriate class). Or to make session.load be smart enough to handle hibernate proxy objects.
Thanks
Hibernate version: 2.1
Full stack trace of any exception that occurs:Code:
com.guardent.rbac.RbacException: com.guardent.osl.TargetException: net.sf.hibernate.MappingException: No persister for: com.guardent.persistent.objects.Device$$EnhancerByCGLIB$$c3a8ac4c
at com.guardent.rbac.GrantChecker.getTuplesWithCapability(GrantChecker.java:181)
at com.guardent.osl.Tester.doListObjectsForUser(Tester.java:218)
at com.guardent.osl.Tester.test(Tester.java:162)
at com.guardent.osl.Tester.main(Tester.java:114)
Caused by: com.guardent.osl.TargetException: net.sf.hibernate.MappingException: No persister for: com.guardent.persistent.objects.Device$$EnhancerByCGLIB$$c3a8ac4c
at com.guardent.persistent.PersistentSession.load(PersistentSession.java:39)
at com.guardent.osl.TargetResultCrossProductFinal.getSet(TargetResultCrossProductFinal.java:294)
at com.guardent.osl.TargetResultCrossProductFinal.addTuples(TargetResultCrossProductFinal.java:339)
at com.guardent.osl.TargetResultCrossProductFinal.getTuples(TargetResultCrossProductFinal.java:352)
at com.guardent.rbac.GrantChecker.getTuplesWithCapability(GrantChecker.java:179)
... 3 more
Caused by: net.sf.hibernate.MappingException: No persister for: com.guardent.persistent.objects.Device$$EnhancerByCGLIB$$c3a8ac4c
at net.sf.hibernate.impl.SessionFactoryImpl.getPersister(SessionFactoryImpl.java:347)
at net.sf.hibernate.impl.SessionImpl.getClassPersister(SessionImpl.java:2690)
at net.sf.hibernate.impl.SessionImpl.doLoadByClass(SessionImpl.java:1988)
at net.sf.hibernate.impl.SessionImpl.load(SessionImpl.java:1920)
at com.guardent.persistent.PersistentSession.load(PersistentSession.java:37)
... 7 more
Name and version of the database you are using: Oracle 8
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